In 2003, as part of that year's Intelligence Authorization Act, Congress specifically authorized the creation and funding of the National Commission on Terrorist Attacks Upon the United States, which quickly and simply changed its common name to the 9/11 Commission. Congress mandated that this entity not just examine and report on the facts of the attacks themselves--which they did in the gripping narrative that comprises the first part of their report--but also to "make a full and complete accounting of the circumstances surrounding the attacks, and the extent of the United States' preparedness for, and immediate response to, the attacks."...